Convert Watt per metre degree Celsius to Watt per millimetre kelvin
Convert Watt per metre degree Celsius (W/(m·°C)) to Watt per millimetre kelvin (W/(mm·K)) instantly and accurately.
Conversion Formula
W/(mm·K) = W/(m·°C) × 0.001
About Watt per metre degree Celsius
The watt per metre degree Celsius (W/(m·°C)) equals exactly 1 W/(m·K) since temperature intervals 1 °C = 1 K. Widely used in building physics (EN ISO 6946), HVAC engineering, and European material datasheets as an equivalent notation. Stone: ≈2.5 W/(m·°C); softwood timber: ≈0.14 W/(m·°C); glass wool: ≈0.04 W/(m·°C). 1 W/(m·°C) = 1 W/(m·K).
About Watt per millimetre kelvin
The watt per millimetre kelvin (W/(mm·K)) equals exactly 1000 W/(m·K) since 1 mm = 10⁻³ m. Used in microelectronics thermal engineering where components are millimetre-scale: copper ≈0.385, silicon ≈0.148 W/(mm·K). Thermal interface material datasheets for high-performance pads and solder joints commonly use this unit. 1 W/(mm·K) = 1000 W/(m·K) = 10 W/(cm·K).
Quick Reference Table
| Watt per metre degree Celsius (W/(m·°C)) | Watt per millimetre kelvin (W/(mm·K)) |
|---|---|
| 1 W/(m·°C) | 0.001 W/(mm·K) |
| 2 W/(m·°C) | 0.002 W/(mm·K) |
| 5 W/(m·°C) | 0.005 W/(mm·K) |
| 10 W/(m·°C) | 0.01 W/(mm·K) |
| 25 W/(m·°C) | 0.025 W/(mm·K) |
| 50 W/(m·°C) | 0.05 W/(mm·K) |
| 100 W/(m·°C) | 0.1 W/(mm·K) |